[mutter/wip/carlosg/ci-coverity] ci: Add job for pushing coverity reports



commit 6ee45dbef9750c9d3d956c13069ce3f7179a6b75
Author: Carlos Garnacho <carlosg gnome org>
Date:   Sat Feb 29 15:06:26 2020 +0100

    ci: Add job for pushing coverity reports
    
    This job does:
    1. Download the coverity bundle and untar it
    2. Build mutter using clang and the coverity tool
    3. Compress the coverity report
    4. Upload for analysis
    
    Things to note:
    - Analysis are throttled, as per https://scan.coverity.com/faq#frequency
      we qualify for 21 weekly builds, 3 daily. Mutter is sometimes a busy
      project, so it seems we'd get often those consumed early in the day.
      This is something we can resign to, but the times we'll try to upload
      a report to have it rejected make the operation kinda pointless and
      probably better throttled by ourselves.
    - Just made it apply to master, given the restrictions above.
    - I had to use clang as the coverity tool doesn't seem to work ATM with
      gcc as per recent Fedora.
    - The coverity tarball is 714MB in size, which is a bit too big to have
      it downloaded each time. As per their upload instructions, the tarball
      gets updated twice yearly, may also be a candidate for caching.
    - The coverity token for mutter is kept private/hidden in gitlab CI
      settings.

 .gitlab-ci.yml | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index ea2ad98c9..602ad63d4 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -4,6 +4,7 @@ stages:
  - review
  - build
  - test
+ - analysis
 
 check-commit-log:
   stage: review
@@ -77,3 +78,18 @@ can-build-gnome-shell:
   only:
     - merge_requests
     - /^.*$/
+
+coverity:
+  stage: analysis
+  allow_failure: true
+  script:
+    - dnf install -y clang
+    - curl https://scan.coverity.com/download/linux64 --data "token=$COVERITY_TOKEN&project=mutter" --output 
/tmp/coverity_tool.tgz
+    - tar zxf /tmp/coverity_tool.tgz
+    - CC=clang meson coverity-build
+    - ./cov-analysis-linux64-*/bin/cov-build --dir cov-int ninja -C build
+    - tar czf cov-int.tar.gz cov-int
+    - curl https://scan.coverity.com/builds?project=mutter
+      --form token=$COVERITY_TOKEN --form email=carlosg gnome org
+      --form file=@cov-int.tar.gz --form version="`git describe --tags`"
+      --form description="gitlab CI build"'


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